2187824 has 10 divisors (see below), whose sum is σ = 4238940. Its totient is φ = 1093904.

The previous prime is 2187817. The next prime is 2187827. The reversal of 2187824 is 4287812.

It is a d-powerful number, because it can be written as 2⁷ + 1 + 8 + 7⁵ + 8⁷ + 2¹³ + 4⁸ .

It is not an unprimeable number, because it can be changed into a prime (2187827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68354 + ... + 68385.

It is an arithmetic number, because the mean of its divisors is an integer number (423894).

2^2187824 is an apocalyptic number.

It is an amenable number.

2187824 is a deficient number, since it is larger than the sum of its proper divisors (2051116).

2187824 is a wasteful number, since it uses less digits than its factorization.

2187824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136747 (or 136741 counting only the distinct ones).

The product of its digits is 7168, while the sum is 32.

The square root of 2187824 is about 1479.1294737108. The cubic root of 2187824 is about 129.8187612512.

The spelling of 2187824 in words is "two million, one hundred eighty-seven thousand, eight hundred twenty-four".